The shirtless man in the golden mask and cape has plans to lead his own country one day. For now, though, he’s leading a sparsely attended rave on the second floor of a San Francisco office building. Ion helped organize Zuzalu, Buterin’s 2023 “pop-up city” for life extensionists at a resort in Montenegro, and another pop-up called Vitalia, on an island off the Honduran coast. For his latest project, Viva City, Ion has booked this 16-story office building on Market Street. In Viva City, the typical lengthy approval procedures and rules around biotechnology and experimental medical treatments won’t apply.